Write the expression in terms of sine and cosine, and simplify so that no quotients appear in the final expression.(1 + cot ?)(1 - cot ?) - csc2 ?
A. 0
B. -2 cot2 ?
C. 2 cot2 ?
D. 2
Answer: B
Mathematics
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f(7)
A. 49 B. -49 C. 81 D. 5
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Find the area of the shaded region.
A. 
B. 
C. 
D. 
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Simplify.
A. 
B. ab
C. 
D. 
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Write the mixed number as an improper fraction.-9
A. - 
B. - 
C. - 
D. - 
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